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Fair Value and Interest Rate Risk - Carrying Amounts and Estimated Fair Values of Financial Instruments (Detail) (USD $) In Thousands, unless otherwise specified | Mar. 31, 2014 | Dec. 31, 2013
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Financial Assets: |  |
Cash and noninterest bearing deposits due from banks, Carrying Amount | $ 1,503 | $ 1,570
Interest-bearing deposits due from banks, Carrying Amount | 58,254 | 33,296
Other investments, Carrying Amount | 4,450 | 4,450
Federal Reserve Bank stock, Carrying Amount | 1,444 | 1,444
Federal Home Loan Bank stock, Carrying Amount | 4,143 | 4,143
Loans receivable, net, Carrying Amount | 415,123 | 418,148
Accrued interest receivable, Carrying Amount | 1,578 | 1,566
Financial Liabilities: |  |
Savings deposits, Carrying Amount | 86,409 | 80,983
Money market deposits, Carrying Amount | 29,502 | 29,310
NOW accounts, Carrying Amount | 25,464 | 28,618
Level 1 [Member] |  |
Financial Assets: |  |
Cash and noninterest bearing deposits due from banks, Carrying Amount | 1,503 | 1,570
Interest-bearing deposits due from banks, Carrying Amount | 58,254 | 33,295
Federal Reserve Bank stock, Carrying Amount | 1,444 | 1,444
Federal Home Loan Bank stock, Carrying Amount | 4,143 | 4,143
Accrued interest receivable, Carrying Amount | 1,578 | 1,566
Cash and noninterest bearing balances due from banks, Estimated Fair Value | 1,503 | 1,570
Interest-bearing deposits due from banks, Estimated Fair Value | 58,254 | 33,295
Federal Reserve Bank stock, Estimated Fair Value | 1,444 | 1,444
Federal Home Loan Bank stock, Estimated Fair Value | 4,143 | 4,143
Accrued interest receivable, Estimated Fair Value | 1,578 | 1,566
Financial Liabilities: |  |
Demand deposits, Carrying Amount | 57,967 | 55,358
Savings deposits, Carrying Amount | 86,409 | 80,983
Money market deposits, Carrying Amount | 29,502 | 29,310
NOW accounts, Carrying Amount | 25,464 | 28,618
Accrued interest payable, Carrying Amount | 1,589 | 1,388
Demand deposits, Estimated Fair Value | 57,967 | 55,358
Savings deposits, Estimated Fair Value | 86,409 | 80,983
Money market deposits, Estimated Fair Value | 29,502 | 29,310
NOW accounts, Estimated Fair Value | 25,464 | 28,618
Accrued interest payable, Estimated Fair Value | 1,589 | 1,388
Level 2 [Member] |  |
Financial Assets: |  |
Other investments, Carrying Amount | 4,450 | 4,450
Other investments, Estimated Fair Value | 4,450 | 4,450
Financial Liabilities: |  |
Time deposits, Carrying Amount | 228,627 | 235,935
FHLB Borrowings, Carrying Amount | 80,000 | 57,000
Subordinated debentures, Carrying Amount Value | 8,248 | 8,248
Time deposits, Estimated Fair Value | 229,231 | 236,602
FHLB Borrowings, Estimated Fair Value | 80,000 | 57,000
Subordinated debt, Estimated Fair Value | 8,248 | 8,248
Level 3 [Member] |  |
Financial Assets: |  |
Loans receivable, net, Carrying Amount | 415,123 | 418,148
Loans receivable, net, Estimated Fair Value | $ 420,486 | $ 424,831

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- Definition Amount of borrowings as of the balance sheet date from the Federal Home Loan Bank, which are primarily used to cover shortages in the required reserve balance and liquidity shortages. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6479118&loc=d3e64650-112822 + Details
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- Definition Fair value of investments in certain entities that calculate net asset value per share, including, but not limited to, by unit, membership interest, or other ownership interest. Investments include, but are not limited to, investments in certain hedge funds, venture capital funds, private equity funds, real estate partnerships or funds. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 6A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=25499696&loc=SL6742756-110258 + Details
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- Definition For banks and other depository institutions (including Federal Reserve Banks, if applicable): Interest-bearing deposits in other financial institutions for relatively short periods of time including, for example, certificates of deposits, which are presented separately from cash on the balance sheet. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.2) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6476743&loc=d3e59706-112781 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 2 -Article 9 + Details
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- Definition Fair value portion of loan receivable, including, but not limited to, mortgage loans held for investment, finance receivables held for investment, policy loans on insurance contracts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Glossary Loan -URI http://asc.fasb.org/extlink&oid=6517073 + Details
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- Definition Amount after allowance and deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes loans held for sale. Excludes loans and leases covered under loss sharing agreements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 7 -Subparagraph a -Article 9 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.7(a)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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